Letter to the Metropolitan Commission of Sewers on the drainage of the metropolis / By Mr. John Phillips, Chief Surveyor. Extracted from the orders of Court, 21st June, 1849.

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Letter to the Metropolitan Commission of Sewers on the drainage of the metropolis / By Mr. John Phillips, Chief Surveyor. Extracted from the orders of Court, 21st June, 1849. Public Domain Mark. Source: Wellcome Collection.